From d6e311ddb0583e3508ca3478fd211c69ad9b7b0a Mon Sep 17 00:00:00 2001
From: Mikhail Durnev <MikhailD.101@gmail.com>
Date: Wed, 15 Nov 2017 19:20:12 +0300
Subject: [PATCH] added batch removal feature

Now each attachment has checkbox to select multiple attachments. if any
of them are checked 'Remove selected' button appears  at a bottom of
metabox near Add button. Clicking on it will remove selected items.
---
 classes/class.attachments.php | 28 ++++++++++++++++++++++++++++
 css/attachments.css           | 16 ++++++++++++++++
 index.php                     |  2 +-
 js/attachments.js             |  9 +++++++++
 4 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/classes/class.attachments.php b/classes/class.attachments.php
index 2aff952..16eb281 100644
--- a/classes/class.attachments.php
+++ b/classes/class.attachments.php
@@ -736,6 +736,7 @@ function meta_box_markup( $post, $metabox ) {
                 <?php if( $instance->append == true ) : ?>
                     <div class="attachments-invoke-wrapper">
                         <a class="button attachments-invoke"><?php _e( esc_attr( $instance->button_text ), 'attachments' ); ?></a>
+                        <a class="button attachments-batch-remove" style="display: none;"><?php _e( 'Remove selected', 'attachments' ); ?></a>
                     </div>
                 <?php endif; ?>
             </div>
@@ -975,6 +976,31 @@ function(){
 
                     } );
 
+                    $element.on('click', '.attachments-batch-remove', function removeSelectedAttachments(event){
+
+                        if(confirm('<?php _e('Are you sure want to remove selected items?','attachments'); ?>')){
+
+                            var $btn = $(this),
+                                $attachmentsToRemove = $('.select-attachment:checked', $element).parents('.attachments-attachment');
+
+                            $btn.hide();
+                            $attachmentsToRemove.find('.attachment-meta').fadeOut(125);
+                            $attachmentsToRemove.css('min-height',0).animate(
+                                {
+                                    padding: 0,
+                                    margin: 0,
+                                    height: 0
+                                },
+                                600,
+                                function(){
+                                    $attachmentsToRemove.remove();
+                                }
+                            );
+
+                        }
+                    });
+
+
                 });
             </script>
         <?php }
@@ -1316,6 +1342,8 @@ function create_attachment( $instance, $attachment = null ) {
                 <div class="attachments-attachment attachments-attachment-<?php echo esc_attr( $instance ); ?>">
                     <?php $array_flag = ( isset( $attachment->uid ) ) ? $attachment->uid : '{{ attachments.attachment_uid }}'; ?>
 
+                    <input type="checkbox" class="select-attachment" title="<?php _e('Check for batch operations', 'attachments'); ?>">
+
                     <input type="hidden" class="attachments-track-id" name="attachments[<?php echo esc_attr( $instance ); ?>][<?php echo esc_attr( $array_flag ); ?>][id]" value="<?php echo isset( $attachment->id ) ? esc_attr( $attachment->id ) : '{{ attachments.id }}' ; ?>" />
 
                     <?php
diff --git a/css/attachments.css b/css/attachments.css
index fb12617..ab2a693 100644
--- a/css/attachments.css
+++ b/css/attachments.css
@@ -317,3 +317,19 @@ a.attachments-invoke {
 .attachments-toggler:only-child {
     display: none;
 }
+
+.attachments-attachment .select-attachment {
+    display: inline-block;
+    position: absolute;
+    top: 48px;
+    left: 2px;
+}
+
+a.button.attachments-batch-remove {
+    color: #a00;
+    border-color: #a00;
+}
+a.button.attachments-batch-remove:hover{
+    color: #a00;
+    border-color: #ff0000;
+}
\ No newline at end of file
diff --git a/index.php b/index.php
index b8c5c2f..3317077 100644
--- a/index.php
+++ b/index.php
@@ -6,7 +6,7 @@
   * Description: Attachments gives the ability to append any number of Media Library items to Pages, Posts, and Custom Post Types
   * Author:      Jonathan Christopher
   * Author URI:  http://mondaybynoon.com/
-  * Version:     3.5.9
+  * Version:     3.5.9.1
   * Text Domain: attachments
   * Domain Path: /languages/
   * License:     GPLv2 or later
diff --git a/js/attachments.js b/js/attachments.js
index cd4ab94..30a065f 100644
--- a/js/attachments.js
+++ b/js/attachments.js
@@ -115,4 +115,13 @@ jQuery(document).ready(function($){
       }
       return false;
     });
+
+    $('body').on('click','.select-attachment', function showBatchRemoveBtnIfNeeded(e){
+        //select all selected attachment checkboxes
+        if( $('.select-attachment:checked').length ){
+            $('.attachments-batch-remove').show();
+        }else{
+            $('.attachments-batch-remove').hide();
+        }
+    });
 });